Dale S. (1987). Distance learning.
Chicago Style aipamenaDale S. Distance Learning. 1987.
MLA aipamenaDale S. Distance Learning. 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
Dale S. (1987). Distance learning.
Chicago Style aipamenaDale S. Distance Learning. 1987.
MLA aipamenaDale S. Distance Learning. 1987.